1606266647 has 2 divisors, whose sum is σ = 1606266648. Its totient is φ = 1606266646.

The previous prime is 1606266611. The next prime is 1606266653. The reversal of 1606266647 is 7466626061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1606266647 - 2⁸ = 1606266391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1606266598 and 1606266607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1606266667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803133323 + 803133324.

It is an arithmetic number, because the mean of its divisors is an integer number (803133324).

Almost surely, 2^1606266647 is an apocalyptic number.

1606266647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606266647 is an equidigital number, since it uses as much as digits as its factorization.

1606266647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 1606266647 is about 40078.2565364313. The cubic root of 1606266647 is about 1171.1320883067.

The spelling of 1606266647 in words is "one billion, six hundred six million, two hundred sixty-six thousand, six hundred forty-seven".